Terminal connecter



Feb. 5,1929.

1,701,387 H. RABEzzANA t TERHINAL CONNECTER Filed llay 6. 1925 Quorum;

Patented Feb. 5, 1929.

UNITED STATES PATENT oFFiCE.

HECTOR RABEZZANA, OF FLINT, MICHIGAN, ASSIGNOR T0 A C SPARK PLUG COMPANY,

OF FLINT, MICHIGAN, A

TERMINAL CONNECTER.

Application filed May 6,

The object of this invention is to provide 7a connecter for a conductor which will be very simple but will insure an effective connection. This connecter preferably takes the form of a corkscrew-like member having engagement with a conductor in such mannerl as to prevent separation of the parts.

It is a further object of this invention to provide a terminal clip which will yieldingly clasp the terminal. This terminal clip I have preferably combined with my connecter and have formed the parts of resilient material, preferably spring wire, so as to make a cheap and simple construction.

Figure 1 shows in side elevation a conventional spark plug with my device applied thereto; y

Figure 2 is a top plan view of Figure 1;

Figure 3 is a view of the combined clip and connecter by itself; and

Figure 4 is a view corresponding to Fig-- ure 2 and showing a modified form.

The reference character 1 indicates a spark plug of conventional type having a terminal 2 which is, as usual, in conducting relation with the center electrode of the plug. This terminal 2 is customarily threaded as shown in the figure.

With this' terminal I have preferably combined my improved connecter and terminal clip indicated in its entirety by the reference character 4. The member 4 is preferably constructed of resilient material, such as spring wire, and the connecter portion 6 is roughly of corkscrew formation. This portion 6 is adapted to be screwed into the end of a conductor 8 having a covering 10 which may be of insulating material. The conductor 8 is preferably of the multi-strand type and to facilitate the connection with the member 4 the portion 6 is provided with a greater lead between turns or threads of the screw adjacent the free end thereof than elsewhere. Thus when the portion 6 is thrust into the end of the conductor it is enabled to part the strands and find a place among them before the corkscrew action which results in effective intertwining of the parts takes place. If desired, the free end of the portion 6 may be tapered as shown at 7 to facilitate engagement. The turn 12 of the portion 6 which has the least lead is an effective stop to prevent further entrance of the connecter into the conductor. I have preferably reenforced the connection by slip ping a sleeve 14 over the con- 1925. seriai No. 28,427.

ductor covering where theinterwining takes place. This sleeve prevents the rupture of the covering 10.

The turn 12 of the connecter portion of the member 4 merges into the terminal clip portion 16. This portion comprises a simple loop 18. The projecting end 20 of the wire which forms the loop extends at an angle to the main portion thereof forming an effective means in the nature of a lever for expanding the loopl to permit its passage over the end of the terminal.

The form of clip shown in Figure 4 differs from that shown in Figure 3 only in that the end 22 has a return bend 24 therein to receive the terminal.

While I have preferred to show a particular form 'of terminal clip combined with a articular form of connecter and the resultlng structure is capable of effective use for the purposes stated, yet it is apparent that these features need not be necessarily so combined, but that each is capable of effective use independently of the other wherever its particular function is to be performed.

I claim: i'

1. A terminal clip for a multi-strand conductor, including a helical portion having convolutions of varying pitch, inserted so as to be intertwined amongst the several strands of the conductor, means to limit the extent of insertion of the helical-portion and a quick detachable terminal connecting portion.

2. A quick detachable terminal 'clip for conductors, consisting of a single piece of spring wire, having a helical portion for cork-screw-like engagement with the conductor, the convolutions being of varying pitch, with the greatest lead at the free end and the final convolution of relatively slight pitch to stop further entrance of the hellcal portion in the conductor, a contractile portion adapted to grasp a terminal and means to expand the same to permit ready engagement with the terminal.

3. A multi-strand conductor, and means for connecting another member thereto in conductive relation comprising a cork screw like member having the greatest lead between turns at the free end.

4. A terminal clip for connection to an electrical conductor comprising a wire member bent into corkscrew shape and having undulations of varying pitch.

5. A terminal clip for connection to a multi-strand electrical conductor comprising tion adapted for yielding engagement with a wire member bent into corkscrew shape and the terminal. y having the greatest lead between turns at the 7. The combination as set forth in claim 10 free end. 6, the lead between turns of said corkscrew 6. A terminal clip formed of wire and havl being greatest adjacent the free end thereof. ing a corkscrew like portion adapted for en- In testimony whereof I aiiiX my signature. gagernent with the conductor and a loop por- HECTOR RABEZZANA. 

